Remove application-template-wrapper optional feature support #8851

Job	Run time
Type Checking (current version)	46s
Linting	1m 2s
Debug and Prebuilt (All Tests by Package + Canary Features)	3m 24s
Type Checking (other supported versions) (4.9)	58s
Type Checking (other supported versions) (5.0)	1m 4s
Type Checking (other supported versions) (5.1)	1m 9s
Type Checking (other supported versions) (5.2)	1m 2s
Type Checking (other supported versions) (5.3)	1m 1s
Blueprint Tests	8m 4s
Debug and Prebuilt (All Tests by Package + Canary Features) with Deprecations as Errors	3m 15s
Smoke tests (Full Ember Apps)	1m 26s
Browserstack Tests (Safari, Edge)	2m 19s
Debug and Prebuilt (All Tests by Package + Canary Features) with all Deprecations enabled	3m 15s
Extend Prototypes	2m 27s
Node.js Tests	1m 11s
Production (All Tests + Canary Features with Debug Render Tree)	2m 59s
Production (All Tests + Canary Features)	3m 32s
Browser Tests (Firefox)	1m 44s
Publish alpha from default branch	0s
Notify Discord	0s
Publish channel to s3	0s
Deploy tags to npm	0s
	40m 38s

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